<template>
  <div id="app">
    <div class="header">
      <router-link
          to="/list"
          class="header-title">电商网站</router-link>
      <div class="header-menu">
        <router-link to="/cart" class="header-menu-cart">
          购物车
          <span v-if="carList.length">{{ carList.length }}</span>
        </router-link>
      </div>
    </div>
    <router-view></router-view>
  </div>
</template>

<script>
export default {
  name: 'App',
  computed: {
    carList () {
      return this.$store.state.carList
    }
  }
}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>
